document.write(
    `
    <div class="nav c1">
  <div class="img"><a href="../HTML/APP.html"><img src="../image/logo.png" alt="" /></a></div>
  <div class="h1"><h1>东方启音</h1></div>
  <div class="iconfont icon-caidan" id="xiala"></div>
</div>
    `
)